Question

In the absence of hydrogen bonding, the approximate boiling point of water would be :

• A. ${100}^{\circ }C$
• B. $0^{\circ }C$
• C. $-{100}^{\circ }C$
• D. ${373}^{\circ }C$

Answer 1

The correct option is C $-{100}^{\circ }C$

In the absence of hydrogen bonding, boiling point of water would be $-{100}^{\circ }C$. This can be compared with the boiling point of hydrogen sulphide which is $-{60}^{\circ }C$.
The molecular weight of water is lower than that of hydrogen sulphide. Hence, its boiling point will be lower in the absence of hydrogen bonding.